1) About what is 72-37? a) 40 b) 50 c) 30 2) About what is 65+19? a) 80 b) 90 c) 94 3) About what is 29+18? a) 47 b) 40 c) 50 4) About what is 77-62? a) 20 b) 25 c) 10 5) About what is 45+45? a) 80 b) 100 c) 90

2 digit adding and subtracting with estimating

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